A rock is sinking in the water. Which one of these statements correctly describes the buoyant force?
A)It is zero.
B)It is equal to the weight of the wood.
C)It is equal to all the other forces acting on the wood, but opposite in direction.
D)It is equal in magnitude but opposite in direction of the weight of the wood.

Question

Quizplus · Accepted Answer

The buoyant force is equal to the weight of the fluid displaced by the rock, and when an object is sinking, the buoyant force is less than the weight of the object but is still present and acts in the opposite direction to the weight.

A Rock Is Sinking in the Water